./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:00,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:00,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:05:00,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:00,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:00,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:00,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:00,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:00,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:00,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:00,727 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:00,727 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:00,728 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:00,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:00,729 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:00,729 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:00,730 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:00,730 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:00,731 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:00,731 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:00,732 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:00,737 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:00,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:00,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:05:00,738 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:05:00,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:00,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:05:00,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:00,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:05:00,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:00,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:05:00,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:05:00,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:05:00,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:00,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:00,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:00,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:00,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:00,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:00,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:05:00,746 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:00,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:00,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:05:00,747 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:00,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:00,748 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2023-11-19 05:05:01,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:01,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:01,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:01,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:01,086 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:01,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2023-11-19 05:05:04,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:04,565 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:04,566 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2023-11-19 05:05:04,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/data/d74480a46/13c568ea05074e988659083f170a259c/FLAG78ea19e1b [2023-11-19 05:05:04,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/data/d74480a46/13c568ea05074e988659083f170a259c [2023-11-19 05:05:04,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:04,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:04,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:04,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:04,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:04,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:04" (1/1) ... [2023-11-19 05:05:04,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271d8980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:04, skipping insertion in model container [2023-11-19 05:05:04,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:04" (1/1) ... [2023-11-19 05:05:04,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:05,631 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2023-11-19 05:05:05,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:05,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:05:05,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-11-19 05:05:05,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [642] [2023-11-19 05:05:05,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1041] [2023-11-19 05:05:05,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1416] [2023-11-19 05:05:05,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1435] [2023-11-19 05:05:05,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1639] [2023-11-19 05:05:05,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2699] [2023-11-19 05:05:05,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2965] [2023-11-19 05:05:05,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3072] [2023-11-19 05:05:05,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3089] [2023-11-19 05:05:05,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2023-11-19 05:05:05,932 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2023-11-19 05:05:05,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:06,001 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:06,011 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:05:06,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06 WrapperNode [2023-11-19 05:05:06,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:06,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:06,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:05:06,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:05:06,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,221 INFO L138 Inliner]: procedures = 151, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1309 [2023-11-19 05:05:06,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:06,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:05:06,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:05:06,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:05:06,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:05:06,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:05:06,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:05:06,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:05:06,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (1/1) ... [2023-11-19 05:05:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:06,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:06,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:05:06,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:05:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-19 05:05:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-19 05:05:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-19 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-19 05:05:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-19 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-19 05:05:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-19 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-19 05:05:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-19 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-19 05:05:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-19 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-19 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-19 05:05:06,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-19 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-19 05:05:06,482 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-19 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 05:05:06,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-19 05:05:06,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-19 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 05:05:06,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 05:05:06,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 05:05:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-19 05:05:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-19 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-19 05:05:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-19 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-19 05:05:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-19 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 05:05:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 05:05:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-19 05:05:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-19 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 05:05:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 05:05:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 05:05:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-19 05:05:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-19 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 05:05:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 05:05:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-19 05:05:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-19 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-19 05:05:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-19 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-19 05:05:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-19 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-19 05:05:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-19 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 05:05:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 05:05:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 05:05:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 05:05:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 05:05:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-19 05:05:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-19 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-19 05:05:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-19 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-19 05:05:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-19 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 05:05:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 05:05:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 05:05:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-19 05:05:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-19 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-19 05:05:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-19 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-19 05:05:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-19 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:05:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:05:06,854 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:05:06,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:05:08,125 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:05:09,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:05:09,062 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:05:09,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:09 BoogieIcfgContainer [2023-11-19 05:05:09,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:05:09,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:05:09,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:05:09,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:05:09,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:04" (1/3) ... [2023-11-19 05:05:09,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9be9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:09, skipping insertion in model container [2023-11-19 05:05:09,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:06" (2/3) ... [2023-11-19 05:05:09,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9be9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:09, skipping insertion in model container [2023-11-19 05:05:09,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:09" (3/3) ... [2023-11-19 05:05:09,092 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2023-11-19 05:05:09,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:05:09,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:05:09,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:05:09,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1584c760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:05:09,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:05:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-19 05:05:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 05:05:09,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:09,239 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:09,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:09,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 987341591, now seen corresponding path program 1 times [2023-11-19 05:05:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:09,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107231242] [2023-11-19 05:05:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:09,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107231242] [2023-11-19 05:05:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107231242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:09,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:09,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071219413] [2023-11-19 05:05:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:09,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:05:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:05:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:05:09,810 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:05:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:10,044 INFO L93 Difference]: Finished difference Result 596 states and 808 transitions. [2023-11-19 05:05:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:05:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2023-11-19 05:05:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:10,074 INFO L225 Difference]: With dead ends: 596 [2023-11-19 05:05:10,075 INFO L226 Difference]: Without dead ends: 374 [2023-11-19 05:05:10,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:05:10,096 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:10,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-19 05:05:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-19 05:05:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 240 states have internal predecessors, (291), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-19 05:05:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 508 transitions. [2023-11-19 05:05:10,176 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 508 transitions. Word has length 110 [2023-11-19 05:05:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:10,178 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 508 transitions. [2023-11-19 05:05:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:05:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 508 transitions. [2023-11-19 05:05:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 05:05:10,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:10,186 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:10,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:05:10,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:10,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1554495482, now seen corresponding path program 1 times [2023-11-19 05:05:10,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:10,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134799159] [2023-11-19 05:05:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:10,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134799159] [2023-11-19 05:05:10,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134799159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651693581] [2023-11-19 05:05:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:10,578 INFO L87 Difference]: Start difference. First operand 374 states and 508 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:05:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:10,788 INFO L93 Difference]: Finished difference Result 592 states and 786 transitions. [2023-11-19 05:05:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2023-11-19 05:05:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:10,793 INFO L225 Difference]: With dead ends: 592 [2023-11-19 05:05:10,793 INFO L226 Difference]: Without dead ends: 376 [2023-11-19 05:05:10,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:10,801 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:10,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 913 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-19 05:05:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-11-19 05:05:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.3139013452914798) internal successors, (293), 242 states have internal predecessors, (293), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-19 05:05:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 510 transitions. [2023-11-19 05:05:10,849 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 510 transitions. Word has length 111 [2023-11-19 05:05:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:10,849 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 510 transitions. [2023-11-19 05:05:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 05:05:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 510 transitions. [2023-11-19 05:05:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 05:05:10,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:10,853 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:05:10,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:10,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1124020313, now seen corresponding path program 1 times [2023-11-19 05:05:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81763305] [2023-11-19 05:05:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:11,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81763305] [2023-11-19 05:05:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81763305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:11,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:11,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583016503] [2023-11-19 05:05:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:11,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:11,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:11,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:11,057 INFO L87 Difference]: Start difference. First operand 376 states and 510 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 05:05:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:11,243 INFO L93 Difference]: Finished difference Result 751 states and 1034 transitions. [2023-11-19 05:05:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2023-11-19 05:05:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:11,252 INFO L225 Difference]: With dead ends: 751 [2023-11-19 05:05:11,252 INFO L226 Difference]: Without dead ends: 443 [2023-11-19 05:05:11,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:11,261 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 84 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:11,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 920 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-19 05:05:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2023-11-19 05:05:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3653136531365313) internal successors, (370), 292 states have internal predecessors, (370), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 05:05:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 615 transitions. [2023-11-19 05:05:11,307 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 615 transitions. Word has length 121 [2023-11-19 05:05:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:11,308 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 615 transitions. [2023-11-19 05:05:11,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 05:05:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 615 transitions. [2023-11-19 05:05:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 05:05:11,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:11,315 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:11,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:05:11,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:11,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1728235997, now seen corresponding path program 1 times [2023-11-19 05:05:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742728530] [2023-11-19 05:05:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:11,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742728530] [2023-11-19 05:05:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742728530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:11,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515838813] [2023-11-19 05:05:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:11,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:11,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:11,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:11,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:05:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:11,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:05:11,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:12,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515838813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:05:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 05:05:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661713000] [2023-11-19 05:05:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:12,092 INFO L87 Difference]: Start difference. First operand 438 states and 615 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-19 05:05:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:12,329 INFO L93 Difference]: Finished difference Result 1243 states and 1795 transitions. [2023-11-19 05:05:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 122 [2023-11-19 05:05:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:12,339 INFO L225 Difference]: With dead ends: 1243 [2023-11-19 05:05:12,339 INFO L226 Difference]: Without dead ends: 830 [2023-11-19 05:05:12,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:12,346 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 425 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:12,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 964 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-19 05:05:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 828. [2023-11-19 05:05:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 517 states have (on average 1.3636363636363635) internal successors, (705), 554 states have internal predecessors, (705), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (244), 223 states have call predecessors, (244), 223 states have call successors, (244) [2023-11-19 05:05:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1174 transitions. [2023-11-19 05:05:12,423 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1174 transitions. Word has length 122 [2023-11-19 05:05:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:12,426 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1174 transitions. [2023-11-19 05:05:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-19 05:05:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1174 transitions. [2023-11-19 05:05:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 05:05:12,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:12,430 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:12,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:05:12,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:12,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:12,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:12,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1060763523, now seen corresponding path program 1 times [2023-11-19 05:05:12,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:12,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371042801] [2023-11-19 05:05:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:12,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371042801] [2023-11-19 05:05:12,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371042801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255969725] [2023-11-19 05:05:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:12,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:12,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:12,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:12,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:05:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:13,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:05:13,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 05:05:13,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255969725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:05:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 05:05:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088258414] [2023-11-19 05:05:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:13,389 INFO L87 Difference]: Start difference. First operand 828 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:05:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:13,649 INFO L93 Difference]: Finished difference Result 2180 states and 3121 transitions. [2023-11-19 05:05:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:13,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 118 [2023-11-19 05:05:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:13,662 INFO L225 Difference]: With dead ends: 2180 [2023-11-19 05:05:13,663 INFO L226 Difference]: Without dead ends: 1582 [2023-11-19 05:05:13,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:13,667 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 417 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:13,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1173 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-11-19 05:05:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1580. [2023-11-19 05:05:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 988 states have (on average 1.3593117408906883) internal successors, (1343), 1056 states have internal predecessors, (1343), 426 states have call successors, (426), 165 states have call predecessors, (426), 165 states have return successors, (489), 422 states have call predecessors, (489), 422 states have call successors, (489) [2023-11-19 05:05:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2258 transitions. [2023-11-19 05:05:13,800 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2258 transitions. Word has length 118 [2023-11-19 05:05:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:13,801 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2258 transitions. [2023-11-19 05:05:13,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:05:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2258 transitions. [2023-11-19 05:05:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-19 05:05:13,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:13,810 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:13,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:14,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:14,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1661233772, now seen corresponding path program 1 times [2023-11-19 05:05:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747283304] [2023-11-19 05:05:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 05:05:14,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:14,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747283304] [2023-11-19 05:05:14,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747283304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:14,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:14,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721630926] [2023-11-19 05:05:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:14,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:14,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:14,222 INFO L87 Difference]: Start difference. First operand 1580 states and 2258 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:05:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:14,421 INFO L93 Difference]: Finished difference Result 2916 states and 4221 transitions. [2023-11-19 05:05:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:14,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 120 [2023-11-19 05:05:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:14,433 INFO L225 Difference]: With dead ends: 2916 [2023-11-19 05:05:14,433 INFO L226 Difference]: Without dead ends: 1574 [2023-11-19 05:05:14,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:14,440 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 472 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:14,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 465 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2023-11-19 05:05:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2023-11-19 05:05:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 989 states have (on average 1.3447927199191103) internal successors, (1330), 1049 states have internal predecessors, (1330), 418 states have call successors, (418), 166 states have call predecessors, (418), 166 states have return successors, (477), 414 states have call predecessors, (477), 414 states have call successors, (477) [2023-11-19 05:05:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2225 transitions. [2023-11-19 05:05:14,561 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2225 transitions. Word has length 120 [2023-11-19 05:05:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:14,561 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2225 transitions. [2023-11-19 05:05:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-19 05:05:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2225 transitions. [2023-11-19 05:05:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 05:05:14,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:14,568 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:14,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:05:14,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:14,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1951907819, now seen corresponding path program 1 times [2023-11-19 05:05:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473246001] [2023-11-19 05:05:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:14,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473246001] [2023-11-19 05:05:14,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473246001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234700628] [2023-11-19 05:05:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:14,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:14,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:14,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:14,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2303481-bc69-4b4b-97bf-8c5368fc8b1e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:05:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:15,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:05:15,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:15,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:05:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234700628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:05:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1497442079] [2023-11-19 05:05:15,325 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2023-11-19 05:05:15,325 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:05:15,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:05:15,335 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:05:15,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:05:51,460 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 493 for LOIs [2023-11-19 05:05:53,006 INFO L180 IcfgInterpreter]: Interpretation finished